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Why do people say the universe has no center? every simulation I run, 99% of all universes have a hugeass massive fucking spiraling clusterfuck right about the origin, which later gets ejected in a lot of cases. If it does get ejected, It comes back after a very long time and wrecks pretty much everything. the only way the universe can be homogenous and centerless is if the gravitational constant equals zero, or is negative, and one assumes that the universe is a 4D torus or something. so assuming big bang, why do people say there is no center? i suspect that we can find the center by taking a second, closer look at the red shifts from large galactic clusters. But, there are a lot of much smarter astrophysicists out there who spent much more time and money figuring this shit out, but can someone boil it down for me and explain why they're so certain?
Anonymous
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>>7614852 i suspect in fear that sci has no answers..
Anonymous
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The Big Cuck xDD
Anonymous
>>7614852 did it occur to you that your simulations are inaccurate?
Anonymous
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>>7614852 Because your simulations are shit.
Anonymous
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>>7614852 The image you posted is from your simulations? It looks like 'the origin' is a point there, whereas the Big Bang singularity is 2-dimensional.
Anonymous
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>>7614852 maybe it's because the big bangbros didn't happen
Anonymous
>>7614926 pics mostly unrelated, but how are they inaccurate?
even ran some models with an analogue to dark energy.
Anonymous
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Add in periodic boundary conditions. At the very least you will get a finite universe with no boundary. You have a finite universe with an edge, of course it will have a centre. You defined it to be so. The universe we observe is relatively homogenous on large scales. People have looked for relations from that and failed. Gravitational collapse also wouldn't give rise to a smooth CMB.
Anonymous
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>>7614852 Of course there is a center. It's toward Virgo. We're working on it.
Anonymous
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You do understand what a theory is, don't you?
Anonymous
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It's really more accurate to say "there's no way to know where the center of the universe is", and though I'm no astrophysicist it's my understanding that this is because as far as we can tell every galaxy is moving away from each other at a rate proportional to their distance from one another. Meaning that galaxy a is moving away from galaxy b just as fast as galaxy b is moving away from galaxy a, and neither seems to be converging or orbiting one single point. I'm assuming that you didn't account for the fact that the Big Bang was an explosion in space, but THE explosion of space. Prior to the Big Bang there was no space and no time, so it wasn't an explosion like how you're imagining it.
Anonymous
>>7614950 Well, presumably you're assuming Euclidean geometry and Newtonian gravity, which aren't accurate at these scales. You need to be using general relativity. And learning GR will answer the center question.
Anonymous
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>>7615378 That said, even with plain Euclidean geometry you can have a centerless universe if it's infinite, and that is the scenario we are in as far as we can measure it. You could even simulate Newtonian gravity in such a universe, but you'd have to be careful about the divergences. Easier to just learn GR.
Anonymous
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>>7614852 OP, If the universe had a center, would the expansion of space involve "new" cubic meters of space "spawning" at some location in deep intergalactic space?
Every existing cubic meter gets a teeny-tiny big bigger every second, every day.
No center.